Lock for a wear assembly

Abstract

Wear members for wear assemblies include a lock configured to secure the wear member to a base, where the lock has two engagement positions, namely: (a) a first position that secures the lock to the wear member, and (b) a second position that secures the wear member to the base. The locks are further configured to be unlatched and removed from the wear member in two phases, a first retraction of the latching mechanism, followed by a rotation of the lock itself with removal from the wear member.

We claim: 
     
       1. A lock for securing a wear member to ground-engaging equipment comprising:
 a lock body including a front bearing surface for contacting a base on the ground-engaging equipment and a rearwardly-opening recess for receiving a complementary support in a hole in the wear member; 
 an actuator member movably coupled to the lock body; and 
 a latch member movably coupled to the actuator member and the lock body such that movement of the actuator member relative to the lock body moves the latch member between a latched position in which a portion of the latch member extends outward in a direction to engage a wear member and an unlatched position in which the latch member is retracted relative to the latched position. 
 
     
     
       2. A lock according to  claim 1  including a resilient member for biasing the latch member toward the latched position. 
     
     
       3. A lock according to  claim 1  wherein the actuator member rotates in the lock body on a first axis, and the latch member is pivotable about a second axis between the latched and unlatched positions. 
     
     
       4. A lock according to  claim 3  wherein the first axis and the second axis are parallel and non-aligned. 
     
     
       5. A lock according to  claim 3  wherein the first axis and the second axis are non-parallel. 
     
     
       6. A lock according to  claim 3  wherein the first axis diverges from the second axis at an angle from 0° to 45° as measured in a plane to which both axes are projected. 
     
     
       7. A lock according to  claim 1  wherein the actuator member includes a first end having a tool interface and a second end opposite the first end, wherein the second end includes a cam for engaging the latch member and translating motion of the actuator member to the latch member for moving the latch member between the latched and unlatched positions.